Learn about the geology of north-central Mexico through the 21 papers presented in this volume, that span the assembly of Pangea in the Permian-Early Triassic, the Mesozoic opening of the Gulf of Mexico, and the evolution of the Mexican geosyncline. Multidisciplinary topics include analysis of the Permian-Triassic magmatic arc from surface and well data; detailed stratigraphy and paleontology of red beds of Late Triassic and Middle Jurassic age along the Gulf of Mexico coast region; studies on the Jurassic-Cretaceous boundary in eastern Mexico, as well as a strong emphasis on the sequence stratigraphy, sedimentology, and microfacies of Upper Jurassic to Cretaceous successions of northeastern Mexico; and selective studies in La Popa basin, and tectono-stratigraphic analyses of the lower Middle Jurassic geology in central Mexico. Gravity and paleomagnetic investigation in northern Mexico complement many of the tectonic and structural papers.